Product Introduction
Chemical Reagent Sulfuric Acid (H₂SO₄, ≥95%–98% AR grade) is a colorless, oily, strong acid liquid that is completely soluble in water and strongly exothermic. It has strong acidity, strong dehydration properties, and high reactivity, and is used for acidification, catalysis, and water removal.
pH Range
pH 0–2 Strong Acid Reaction Zone
Suitable for strong acid catalysis, metal pickling, and high-efficiency acidification reactions.
pH 2–5 Precise Adjustment Zone
Used for process acidity control and reaction rate regulation.
Wide-Range Controllable Adjustment
Achieves precise control within the 0–7 range through concentration ratio adjustments.
Application
Laboratory Analysis and Reagent Preparation
Fine Chemicals (Esterification, Nitration, Sulfonation)
Metal Pickling and Surface Treatment
Water Treatment pH Adjustment
Lead-Acid Battery Electrolyte Raw Materials
Pharmaceutical and Intermediate Synthesis
Product Parameters
|
Index requirements for chemical reagent sulfuric acid |
|||
|
Index |
Superior purity |
Analytical purity |
Chemical purity |
|
Content (H2SO4), ω/% |
95～98 |
95～98 |
95～98 |
|
Colour, Heshen unit |
≤10 |
≤10 |
≤15 |
|
Ignition residue (calculated as sulfate), ω/% |
≤0.0005 |
≤0.001 |
≤0.005 |
|
(Cl), ω/% |
≤0.00002 |
≤0.00003 |
≤0.00005 |
|
(NO3), ω/% |
≤0.00002 |
≤0.00005 |
≤0.0005 |
|
(NH4), ω/% |
≤0.0001 |
≤0.0002 |
≤0.001 |
|
(Fe), ω/% |
≤0.00002 |
≤0.00005 |
≤0.0001 |
|
(Cu), ω/% |
≤0.00001 |
≤0.00001 |
≤0.0001 |
|
(As), ω/% |
≤0.000001 |
≤0.000003 |
≤0.000005 |
|
(Pb), ω/% |
≤0.00001 |
≤0.00001 |
≤0.0001 |
|
Reduced potassium permanganate substances (calculated as SO2), ω/% |
≤0.0002 |
≤0.0005 |
≤0.001 |
Related Processes
Contact Method Production: High-conversion catalytic oxidation, stable purity.
Distillation Purification: Removes impurities, ensuring reagent-grade standards.
Online Concentration Monitoring: Density control error ≤ ±0.2%.
Corrosion-Resistant Storage and Transportation System: Prevents contamination and concentration fluctuations.
Batch Stability
① Raw Material Control: High-purity sulfur source, strictly limiting impurities such as Fe.
② Active Ingredient Detection: Batch-by-batch testing of H₂SO₄ content and impurity indicators.
③ Performance Consistency Testing: Dual verification of density and acidity.
④ Batch Deviation Control: SPC control, minimal concentration fluctuations, ensuring stable supply.
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